No contact at all with another human while I was there! Entry instructions were clear, the entry and stairs would be tight for really large bags. The public areas seem run-down, but the room and bathroom were nicely done.
My room was facing the street, and the noise might bother some people, tho it quieted down around midnight. The temp was fine and the window opened, but there’s no a/c so I expect it would be quite hot in the summer.
Closest tube stop from Heathrow was the Piccadilly line to Russell Square;0 Euston is also pretty close.